Got cdl license do you need air brake indorsement 26000 truck pulling 10000 lbs trailer Georgia?

That combination, unless it's hauling hazardous materials, doesn't require a CDL at all. Now, if that was a 12,000 GVW trailer, then a Class A would be required.

There is no such thing as an air brake endorsement - only a restriction, and only applicable to vehicles requiring a CDL.